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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            position: absolute;
            width: 100px;
            height: 100px;
            background-color: pink;
        }
    </style>
</head>

<body>
    <div></div>
    <script>
        var div = document.querySelector('div');
        var startX = 0;
        var startY = 0;
        var x = 0;
        var y = 0;
        div.addEventListener('touchstart', function(e) {
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                var moveX = e.targetTouches[0].pageX;
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</body>

</html>